Improvement in machines for bending truck-irons for railway-cars



v J. '1. WILSON. MACHINES FOR BENDING TRUCK-IRONS FOR RAILWAY CARS.

Patented Oct. 2, 1877.

Inx/Enmr PATENT OFFICE.

JOHN T. WILSON, OF PITTSBURG, PENNSYLVANIA, ASSIGNOB. TO WILSON,

WALKER & co,

or SAME PLAGE.

IMPROVEMENT IN MACHINES FOR BENDING TRUCK-IRONS FOR RAILWAY-CARS.

Specification forming .part of Letters Patent No. 195,737, dated October2, 1877; application filed March 29, 1877.

To all whom it may concern:

Be it known that I, JOHN T. WILSON, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a new and usefulImprovement in Machines for Bending Truck-Iron for Railway-Oars and I dohereby declare that the following is a full and exact descriptionthereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon.

The nature of my invention consists in the combination of bending-dieswith operating mechanism, so constructed and arranged with relation tothe moving die that iron of difl'erent thicknesses may be bent to thedesired form in the same pair of dies.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

In the accompanying drawings, which form part of my specification,Figure 1 is a side elevation of the bending-machine. Fig. 2 is a topview of the same, representing the relative position of the severalparts prior to the bending of the truck-iron m. Fig. 3 represents theseveral parts of the machine when the truckiron is bent to thedesired-form. Fig. 4 is an inverted view of the pivoted eccentric forvarying the travel of the bending-die C. Fig. 5 is a vertical section ofthe eccentric, showing the relation it bears to the sliding head and die0. Fig. 6 is an. edge view of aJtruck-iron for railway-cars.

In the accompanying drawings, A represents the frame of the machine, inwhich are made grooves B for guides placed on the under side of thebending-die'O to prevent lateral motion of the die. The die 0 isconnected to a pivoted eccentric, 45, to which is also connected asliding head, g, which method of connection is clearly represented inFig. 5. The sliding head 9 is connected to a pitman or connecting-rod,h, which is connected to a cam, j, on the drivingaxis n. The fixed dieor form D is provided with a screw, f, and clamping-nut e, which nut isfitted to a recess, 1, in the moving die 0. By this arrangement of thescrew f and nut e, the iron to be bent can be firmly clamped and held inposition to the die D.

By having the moving die 0 connected to the pivoted eccentric z itstravel can be adjusted to the different thicknesses of iron used in themanufacture of truck-iron.

The operation of my improvement is as follows: Theiron,being properlyheated, is placed between the dies G and D, as represented at m in Fig.2. The screw f is then operated so that the nut e firmly clamps the ironm to the die D. The revolving of the axis at operates the cam j, whichoperates the pitman h, which operates the sliding head 9, eccentric z,and die 0, throwing them all into the position rep resented in Fig. 3.The lever k is used for the purpose of operating the eccentric i inadjusting the die 0.

Having thus described my improvement, what I claim as of my inventionis 1. In a machine for bending truck-irons for railway-cars, thecombination of the bending dies O D with the clamping-screw f and nut e,substantially as herein described.

2. In a machine'for bending truck-irons for railway-cars, thecombination of the dies 0 D, screw f, and nut c with the eccentric i,sliding head 9, and pitman h, substantially as herein described, and forthe piu'pose set forth.

JOHN T. WILSON.

Witnesses:

JAMES J. JOHNSTON, WEsLEY J oHNsroN.

